人教版九年级Unit13知识点学案
Unit 13 We’re trying to savethe earth!
SectionA
现在完成时的用法
含义：表示过去的动作对现在构成结果或影响或者表示过去的状态一直延续到现在。它强调与现在的联系。
结构：have/has done
时间标志：already、yet、just、for+一段时间、since+过去时间点/一般过去时、ever、never、recently、lately、in recent years、so far、until now、up to now、before、次数、in/during/over the past/last+一段时间、以及固定句型This/That/It is+the+序数词+time+that从句〔现在完成时〕等。
eg:①Theconcert has started.(=The concert is on now.)
②Ihave already en the film.(=I know t口蘑炖鸡
he film now.)
③Hehas turned off the light.(=The 柏子仁的功效与作用
light is off now.)
短暂性动词与连续性动词及其互换
㈠短暂性动词口诀：来去到离看听说，买卖开关起跌落；参加开发还与借，变成带给使〔死〕完结。
㈡短暂性动词与连续性动词的互换
come——behere,go——be there,leave——be away,open(v)——beopen(adj),clo(v)——be
clod(adj),fallasleep——be asleep,join——be in,begin/start——be on,die——bedead,finish
——beover,buy——have,borrow——keep,become——be,catch a cold——havea cold.
〔注：有时候，短暂性动词的否认形式可表连续与时间段连用。〕
eg:Wehaven’t en her for a long time.
⑸现在完成时的5种表达方法
eg:他住在这儿十年了。
Helived here ten years ago.
=Hehas lived here for ten years.
=Hehas lived here since ten years ago.
=It's(been)ten years since he lived here.
=Tenyears has pasd since he lived here.
⑹现在完成时与一般过去时的区别
现在完成时强调与现在的联系，而一般过去时只强调过去的事实，与其它时间无关。
练习：
()1.—Excu me,where is Mr.Brown’s office
—Sorry,I’ve no idea.I ______ here foronly a few days.
worksB.workedC.have workedD.will work
()2.Ben is a foreign teacher.So far,he _____ inSanya for five years.
was teachingB.has taughtC.will teachD.taught
()3.In the past few years,great changes _____ toher;she is not the one that she ud to be.
A.happenedB.have been changedC.havehappenedD.were happened
2.insteadof prep.“替代；而不是〞
后接名词、代词、动名词或名词从句作宾语，有时，其后也可跟介词短语作宾语。
eg:We’llhave tea in the garden instead of in the hou.
注：insteadadv.“替代；物业管理委员会
顶替〞单独使用作状语。
egastsummer I went to Qingdao.This summer I’m going to Dalian instead.
练习：
( )1.We cooked dinner at home instead of ______ .
eat outB.eats outC. eat out
( )2.It’s sunny.Let’s go sighting _____ watching TV in our hotelhome.
A.thankstoB.insteadofC.as well asD.becau of
( )3.—_____ free education,the children in my hometown can go backto school.
—Socan the children in my hometown.
Thanks toB.Instead ofC.As forD.Towards
3.remember的用法
图片rememberto do sth 记起要做某事(未做)
rememberdoing sth 记起做过某事(做过)
eg:①Rememberto write us when you get there.
②Iremember telling you about it twice.
练习：
( )1.—Do you remember _____ Mary the money you borrowed from her
—Yes.I’llgive it to her this afternoon.
giveC.givenD.gave
( )2.Kate,remember _____ for the sick to cheer them up.
to singC.singingD.sang
( )3.Remember _____ your host’s suggestions and _____ the rules.
A.tofollow;obeyB.keep;to keepD.obey;follow
4.hear的用法
搭配：
hear X.do sth.听到某人做某事
hear X.doing sth.听到某人正在做某事
hear that从句 听说……外婆说歌词
hear 婴儿安全座椅
of听说
hear from收到某人的来信
练习：
( )1.—Have you ever heard _____ Mr Black,your new teacher
—Yes,just a little.He’s very friendly.
A.from B.of C.throughD.out
( )2.—Is Tom in the next room
—Well,it’s hard to say.But I heard him _____loudly when I pasd by just now.
A. speakC.spokenD.speaking
( )3.The story is so strange that we have never ______ it before.
A.heardfromB.heardofC.heardD.listened to
5.beharmful to介...(=doharm to介...)对……有害
eg:Smokingis harmful to health.
练习：
( )1.Drinking too much _______ your health.
A.doharm toB.is harm toC.isharmful toD.does harmful to
afford的用法
搭配：
图片sth.负担得起……的费用
图片afford
to do sth.负担得起……做某事的费用
练习：
( )1.They walked becau they couldn’t afford ______ a taxi.
A.k
( )2.—Why don’t you take the bike,Henry
—It’s too expensive.I can’t _____ it.
A.ll B.keepC.borrowD.afford
( )3.—Some children can’t afford _____ necessary stationery(文具).
—Let’s donate our pocket money to them.
buyD.be bought
( )4.The car is too expensive,so I can’t ______ it.
A.offer B.supplyC.afford D.u
SectionB
throw away“扔掉；丢弃〞为固定短语。
eg:It’s a waste to throw away good food.
练习：
()1.—What smells terrible
—Sorry,I’ll ______ my shoes and washthem.
A.put ve awayD.throw away
()2.Recycling is good,so don’t _____ bottlesor newspapers.
A.find outB.hand inC.u upD.throwaway
put短语
put away将……收起
put off推迟
put on穿上；戴上；上演
put down放下；记下
put out熄灭
put back放回
put up张贴；搭建
put through给……接通( )
